Molecular Formula | C6H6N2O2 |
Molar Mass | 138.12 |
Density | 1.3471 (rough estimate) |
Melting Point | 226-228°C(lit.) |
Boling Point | 253.51°C (rough estimate) |
Flash Point | 230.1°C |
Water Solubility | SLIGHTLY SOLUBLE |
Solubility | 1.5g/l |
Vapor Presure | 3.87E-09mmHg at 25°C |
Appearance | White to white-like powder |
Color | White to beige |
BRN | 81405 |
pKa | 2.94±0.10(Predicted) |
Storage Condition | Keep in dark place,Sealed in dry,2-8°C |
Refractive Index | 1.5100 (estimate) |
MDL | MFCD00005203 |
In vitro study | Urocanic acid (UCA) is formed in the upper layers of the epidermis where filaggrin, a histidine-rich filamentous protein produced after caspase-14 cleavage of profilaggrin, is broken down by proteinases into component amino acids. |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
WGK Germany | 3 |
RTECS | NI3425200 |
HS Code | 29332990 |
Hazard Class | IRRITANT |
Reference Show more | 1. [IF=5.82] Jiaqi Wu et al."Role of microbial metabolites of histidine in the development of colitis."MOLECULAR NUTRITION & FOOD RESEARCH |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
biological activity | Urocanic acid is the main light receptor in the skin and naturally exists as trans-urinic acid. |